N. L. SÖHNGEN. "Methan as carbon-food and source of energy for 

 bacteria " 



Bacillus methanicus (800). 



Crude film on culture liquid in methan-oxygen atmosphere. Between the 

 bacteria mucus occurs. 



A^r, 





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Bacillus methanicus (1000). 



Pure culture on agar with salts in methan-oxygen atmosphere. 



Procoedings Royal Acad. Amsterdam. Vol. Vlll. 



